Pneumatic tire



Julie 1o 1924e L. F. PETE:I

PNEUMATIG TIRE Filed Sept. 19. 1923 WITNESsEs ATTORNEYS Paiements 10,-1924.

UNITED `s'rnres 'PATENT orifice.

LOUIS FRANCIS PETEY, 0]? RHINELALNDEB, 'WISGOIN'SIIN.-

rum-.rimarra rma.

Application led September 19, 1923. Serial No. 668,500.

I collapse of either inner tube, the other inner tube will occupy the complete space previously occupied by the two and will function suliiciently to permit-ofv the vehicle being driven withoutl the necessity ofpimmediate placing of a new tube or tire.

The general object of my invention is to` provide a tire of the indicated character imp proved in various particulars withl a view to promote strength and simplicity in the form and arrangement of the members entering into the formation of the two annular inner tube compartments and to promote conveniencein the assembling and disassembling of the tire.

rlhe nature of my invention, its distinguishing features or advantages will clearly appear as the description appears.

Reference is to be had to the accompanyf ing drawings 'forming a part of this speciication, it. being understood that the drawings are merely illustrative of one example of the invention. I

Figure 1 is a cross section of a tire embodying`my invention showing the tire 4indated;

Figure 2 is a view similar to Figure 1 with one of the inner tubes deilated;

Fi re 3 is a cross section of the annular shielor flap element employed in connection with any distinctive tire casing;`

Figure d is an inner side view of said shield.`

In carrying out my invention in accordance with the illustrated example, a casing v 10, having the general exterior shape of an ordinary tire casing, 1s formed with an integral annular tongue or web 11 extendin radially inward from the tread `ortion o'l the tire toward the inner open si e thereof. An annular shield 12 is provided to close the opening of the casing 10. Said shield is formed with side win s or ilaps 13 and with 4annular tongues or we s 14 spaced fromeach other and directed radially outward. Thus, the webs 14 are disposed oppositely to the inwardly directed web 11. The respective webs 11 and 14 have such a depth radially as to overlap onel another over a material area and said webs are flexible to be readily deformed laterally.

The casin shield 12 wit its wings 13 and web 14 when assembled, coact te form two annular compartments within the casin 10, the webs 11 and 14 going to make up a partition at the medial plane ofthe tire. The com artments formed by the casing 10 and shield 12 as described, accommodate two inner tubes 15 which, when infiated..maintain the medial partition radial. Said inner tubes are in-V flated by suitable valves, not shown, pro vided at openings 16 disposed in the shield 12 at opposite sides of the pair .of webs 11. 1t will be .readily understood that, should either inner tube 15 become delated the partition formed by the webs 11 and 11 will deform itself laterally and 'assume a position close to one side ofthe casing 10 as indicated in Figure 2, the inner tube l15 at the opposite side of the partition expanding to substantially occupy the interior of the tire and under sudicient pressure to prevent flattening of the casing 10, thereby avoiding the necessity of stopping to make im mediate change in the tire.

1t will be observed that the web 11 of the casing 10 merges into the latter on rounded lines to avoid shar angles and that the shield is similarly armed at the f juncture of the wings 13 with the bases of the webs 11 so that the one merges into the other on rounded lines without. sha

angles. l

10 with its web 11 and the i l would state'in conclusion that while the illustratedy example constitutes a practical embodiment of my invention, l do not limit myself strictly to the exact details herein illustrated, since, manifestly, the same can be considerably varied 'without departure from the'spirit of the invention as defined in the appended claims and it is to be understood that the casin and shield may be formed of any suitab e materials.

Having thus described my invention, 1

claim:

1. In a pneumatic tire, a casing ha an interior annular web directed radially inward yfrom the body of the casing at the tread portion and disposed appro mately in the medial plane of the casing, togethery with a shield for the open inner side of the casing, said shield presenting annular side Wings overlapping the casing at opposite sides and furthermore having spaced webs to be disposed at opposite sides of the web on the casing, the respective Webs on the casing and shield overlappin over a material area thereof and beingY exible to deform themselves, said casing and said shield with their respective. Webs forming ltwo annular compartments in the tire side by side, the web on the casing and the Webs on the shield jointly forming a partition at the medial plane of the tire, and said compartments adapted to accommodate separate inner tubes.

2. A pneumatic tire comprising a. casing having at the interior thereof approximately in its medial plane an integral annular web, a separate shield closing the open inner side of the tireand having a web overlapping the web of the casing, said Webs deformable laterally, said casing and said shield .with their said Webs jointly forming two compartments extending annularly of the tire at opposite sides of the medial plane and adapted to accommodate separate inner tubes.

3. A pneumatietire comprising a casing having at the interior thereof a proxi mately in its medial plane an integra annular web, a. separate shield closing the open inner side of the tire and having a web overla ping the web of the casing, said Webs deformable laterally, said casing and said Ashield with their said Webs jointly forming two compartments extending annularly of the tire at opposite sides of the medial plane and adapted to accommodate separate inner tubes; together with win on the shield at opposite sides and extensing annularly of the tire, said Wings over lapping adjacent portions of the casing.

4. A pneumatic tire comprising a casing, and a shield at the open inner side ofsaid casing, said casino and said shield having overlapping memzbers jointly forming a partition at the medial plane of the tire and deformable laterally.

5.. A pneumatic tire comprising a casing, and a shield at the open inner side of said casing, said casing and said shield having overlapping flexible members jointly forming a partition within `the tire at the medial plane, said members merging respectively yinto said casing and said shield on curved lines.

LOUIS FRANCIS PETEY. 

